Expansion valve



FIG. 1 is a front perspective view of an expansion valve showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof, a left side view being symmetrical to the right side view;

FIG. 6 is a plan view thereof; and,

FIG. 7 is a bottom view thereof.

The regular dashed lines represent unclaimed portions of the expansion valve and form no part of the claimed design.

The short/long dashed lines represent the boundary between claimed and unclaimed portions of the expansion valve. None of the broken lines form a part of the claimed design. 

The ornamental design for an expansion valve, as shown and described. 